Precursor type influence on the morphology and VUV characteristics of GdPO4:Tb phosphor particles prepared by spray pyrolysis

Kyo Kwang Lee; Yun Chan Kang; Kyeong Youl Jung; Hee Dong Park

doi:10.1149/1.1518611

Precursor type influence on the morphology and VUV characteristics of GdPO₄:Tb phosphor particles prepared by spray pyrolysis

Kyo Kwang Lee, Yun Chan Kang, Kyeong Youl Jung, Hee Dong Park

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The influence of the precursor types of phosphorus such as (NH₄)₂HPO₄, NH₄H₂PO₄, (NH₄)₃PO₄, and H₃PO₄ on the morphology and vacuum ultraviolet (VUV) characteristics of GdPO₄: Tb phosphor particles prepared by spray pyrolysis was investigated. All prepared GdPO₄:Tb phosphor particles had spherical shape and dense structure except for the sample prepared with H₃PO₄, which had hollow morphology after the 3 h post-treatment anneal at 1050°C. The phosphorus type also affected the photoluminescence (PL) intensity of GdPO₄:Tb phosphor particles. The highest PL intensity under VUV excitation was obtained with (NH₄)₂HPO₄ used as the precursor. For optimizing the PL intensity of spherical particles, the average particle size of GdPO₄:Tb phosphor particles prepared using (NH₄)₂HPO₄ was changed from 0.5 to 1.9 μm and the effect on PL intensity was investigated. The optimized GdPO₄:Tb particles have a good excitation spectrum comparable to that of the commercial Zn₂SiO₄:Mn phosphor particles under VUV illumination from 140 to 220 nm.

Original language	English
Pages (from-to)	H31-H34
Journal	Electrochemical and Solid-State Letters
Volume	5
Issue number	12
DOIs	https://doi.org/10.1149/1.1518611
Publication status	Published - 2002 Dec
Externally published	Yes

ASJC Scopus subject areas

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Precursor type influence on the morphology and VUV characteristics of GdPO4:Tb phosphor particles prepared by spray pyrolysis",

abstract = "The influence of the precursor types of phosphorus such as (NH4)2HPO4, NH4H2PO4, (NH4)3PO4, and H3PO4 on the morphology and vacuum ultraviolet (VUV) characteristics of GdPO4: Tb phosphor particles prepared by spray pyrolysis was investigated. All prepared GdPO4:Tb phosphor particles had spherical shape and dense structure except for the sample prepared with H3PO4, which had hollow morphology after the 3 h post-treatment anneal at 1050°C. The phosphorus type also affected the photoluminescence (PL) intensity of GdPO4:Tb phosphor particles. The highest PL intensity under VUV excitation was obtained with (NH4)2HPO4 used as the precursor. For optimizing the PL intensity of spherical particles, the average particle size of GdPO4:Tb phosphor particles prepared using (NH4)2HPO4 was changed from 0.5 to 1.9 μm and the effect on PL intensity was investigated. The optimized GdPO4:Tb particles have a good excitation spectrum comparable to that of the commercial Zn2SiO4:Mn phosphor particles under VUV illumination from 140 to 220 nm.",

author = "Lee, {Kyo Kwang} and Kang, {Yun Chan} and Jung, {Kyeong Youl} and Park, {Hee Dong}",

year = "2002",

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AU - Lee, Kyo Kwang

AU - Kang, Yun Chan

AU - Jung, Kyeong Youl

AU - Park, Hee Dong

PY - 2002/12

Y1 - 2002/12

N2 - The influence of the precursor types of phosphorus such as (NH4)2HPO4, NH4H2PO4, (NH4)3PO4, and H3PO4 on the morphology and vacuum ultraviolet (VUV) characteristics of GdPO4: Tb phosphor particles prepared by spray pyrolysis was investigated. All prepared GdPO4:Tb phosphor particles had spherical shape and dense structure except for the sample prepared with H3PO4, which had hollow morphology after the 3 h post-treatment anneal at 1050°C. The phosphorus type also affected the photoluminescence (PL) intensity of GdPO4:Tb phosphor particles. The highest PL intensity under VUV excitation was obtained with (NH4)2HPO4 used as the precursor. For optimizing the PL intensity of spherical particles, the average particle size of GdPO4:Tb phosphor particles prepared using (NH4)2HPO4 was changed from 0.5 to 1.9 μm and the effect on PL intensity was investigated. The optimized GdPO4:Tb particles have a good excitation spectrum comparable to that of the commercial Zn2SiO4:Mn phosphor particles under VUV illumination from 140 to 220 nm.

AB - The influence of the precursor types of phosphorus such as (NH4)2HPO4, NH4H2PO4, (NH4)3PO4, and H3PO4 on the morphology and vacuum ultraviolet (VUV) characteristics of GdPO4: Tb phosphor particles prepared by spray pyrolysis was investigated. All prepared GdPO4:Tb phosphor particles had spherical shape and dense structure except for the sample prepared with H3PO4, which had hollow morphology after the 3 h post-treatment anneal at 1050°C. The phosphorus type also affected the photoluminescence (PL) intensity of GdPO4:Tb phosphor particles. The highest PL intensity under VUV excitation was obtained with (NH4)2HPO4 used as the precursor. For optimizing the PL intensity of spherical particles, the average particle size of GdPO4:Tb phosphor particles prepared using (NH4)2HPO4 was changed from 0.5 to 1.9 μm and the effect on PL intensity was investigated. The optimized GdPO4:Tb particles have a good excitation spectrum comparable to that of the commercial Zn2SiO4:Mn phosphor particles under VUV illumination from 140 to 220 nm.

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Precursor type influence on the morphology and VUV characteristics of GdPO₄:Tb phosphor particles prepared by spray pyrolysis

Abstract

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